Open Access. Powered by Scholars. Published by Universities.®

Forest Sciences Commons™

Open Access. Powered by Scholars. Published by Universities.®

2004

Discipline
Institution
Keyword
Publication
Publication Type

Articles 91 - 120 of 176

Full-Text Articles in Forest Sciences

Regional Forest Types - Tropical Dry Forests, Skip Van Bloem, Ariel E. Lugo, Peter G. Murphy Jan 2004

Regional Forest Types - Tropical Dry Forests, Skip Van Bloem, Ariel E. Lugo, Peter G. Murphy

Publications

Tropical dry forests occur in nearly every tropical country. This forest type provides critical habitat for large mammals and migratory birds, and patches of dry forest can support a high proportion of endemic plant and animal species, as well as being highly valued for agricultural and production forestry uses. Consequently, conservation and understanding of these forests need emphasis, yet conservationists and scientists still frequently overlook this ecosystem.

Go to article

On The Road: Workable Solutions To The Problems Of Roads And Highways, Mary M. Rowland Jan 2004

On The Road: Workable Solutions To The Problems Of Roads And Highways, Mary M. Rowland

United States Department of Agriculture, Forest Service / University of Nebraska-Lincoln: Faculty Publications

Fourteen authors, ranging from transportation specialists to ecologists, have collaborated to write this very useful compendium describing the newly minted discipline of "road ecology." The authors state that road ecology "uses the science of ecology and landscape ecology to explore, understand, and address the interactions of roads and vehicles with their surrounding environment." The book is not aimed at ecologists; rather, the book's intended primary audience is people associated with transportation, including engineers, planners, environmental specialists, economists, and social scientists. This perspective is one of the most beneficial aspects of the book. Although a large body of road-related literature is …

Go to article

Restoration Of Southern Ecosystems, William Conner, John A. Stanturf, Emile S. Gardiner, Kenneth Outcalt, James M. Guldin Jan 2004

Restoration Of Southern Ecosystems, William Conner, John A. Stanturf, Emile S. Gardiner, Kenneth Outcalt, James M. Guldin

Publications

Restoration of the myriad communities of bottomland hardwood and wetland forests and of the diverse communities of fire-dominated pine forests is the subject of intense interest in the Southern United States. Restoration practice is relatively advanced for bottomland hardwoods and longleaf pine (Pinus palustris Mill.), and less so for swamps and shortleaf pine (P. echinata Mill.). Most bottomland hardwood restoration is taking place on private land, while restoration of swamps and shortleaf pine occurs mostly on public land. Both public and private landowners are involved in the restoration of longleaf pine. Proper matching of species to site is critical to …

Go to article

Siviculture And Management Strategies Applicable To Southern Hardwoods, William Conner, Ray R. Hicks Jr, Robert C. Kellison, David Vanlear Jan 2004

Siviculture And Management Strategies Applicable To Southern Hardwoods, William Conner, Ray R. Hicks Jr, Robert C. Kellison, David Vanlear

Publications

Southern hardwood forests stretch from the Virginias to Florida and from the mid-Atlantic to Missouri. They can generally be grouped into upland forests and bottomland forests. The upland hardwood forests of the southern region are usually associated with the mountainous topography of the Appalachians and Ozarks. Bottomland hardwoods are found along the floodplains of larger rivers in the Atlantic and Gulf Coastal Plains, including the Mississippi River floodplain. Southern hardwood forests are owned by a variety of governmental and private owners, but the vast majority of owners are nonindustrial private individuals. These owners seldom engage in intensive forest management, often …

Go to article

Growth And Survival Of Baldcypress Planted In An Old Ricefield Of Coastal South Carolina, William Conner, L W. Inabinette, M Ozalp Jan 2004

Growth And Survival Of Baldcypress Planted In An Old Ricefield Of Coastal South Carolina, William Conner, L W. Inabinette, M Ozalp

Publications

Vast acreages of baldcypress [Taxodium distichum (L.) Rich.] swampland in coastal South Carolina were cleared for rice production starting in the late 1600s. When rice cultivation ended in the late 1800s, many cultivated areas became
marshlands. Other fields failed to return to forest unless they were planted. In one such area, nine acres were planted with baldcypress in 1956 by MeadWestvaco near Walterboro, SC. Seedlings were planted on an 8- by 8-foot spacing. Beginning in November 1991, five 0.12-acre plots were established within the stand to monitor tree growth and survival and measured yearly. In addition to baldcypress, the stand …

Go to article

Improving Southern Oak Seedling Survival Can Boost After-Tax Investment Returns, Donald L. Grebner, Deborah A. Gaddis, Andrew W. Ezell, Steven H. Bullard Jan 2004

Improving Southern Oak Seedling Survival Can Boost After-Tax Investment Returns, Donald L. Grebner, Deborah A. Gaddis, Andrew W. Ezell, Steven H. Bullard

Faculty Publications

Private forest landowners have many reasons for managing their timberlands- from intensive timber production to wildlife habitat to family recreation. An exciting forestry development is the establishment of oak plantations on agricultural land. Both state and federal governmental assistance programs can provide part of the initial investment involved in forest establishment costs. Unfortunately, there are few existing studies to help landowners decide if the investment will be profitable.

Go to article

Economic Analysis Of Pruning And Low-Density Management Compared To Traditional Management Of Loblolly Pine Plantations In East Texas, Ching Hsun Huang, Gary D. Kronrad Jan 2004

Economic Analysis Of Pruning And Low-Density Management Compared To Traditional Management Of Loblolly Pine Plantations In East Texas, Ching Hsun Huang, Gary D. Kronrad

Faculty Publications

Economic analyses were conducted to compare traditional loblolly pine (Pinus taeda L.) timber management to low-density management combined with pruning in East Texas. Soil expectation values were used to determine the financially optimal thinning and final harvesting schedules (including rotation length, and the timing, frequency and intensity of thinning). Two stumpage price assumptions were made: market price and premium price for pruned, clear sawlogs. Five site indices (50 to 90) and six real alternative rates of return (ARR) (2.5 to 15.0%) were employed. Results indicate that if the market price of sawtimber is $450/mbf, traditional management is more profitable for …

Go to article

Fusiform Rust Trends In East Texas: 1969 To 2002, Dean W. Coble, Young Jin Lee Jan 2004

Fusiform Rust Trends In East Texas: 1969 To 2002, Dean W. Coble, Young Jin Lee

Faculty Publications

Fusiform rust [Cronartium quercuum (Berk.) Miyabe ex Shirai f. sp. Fusiforme] infection rates in east Texas increased to nearly 50 percent in slash pine (Pinus elliottii Engelm.) and about 15 percent in loblolly pine (Pinus taeda L.) plantations during the 18-year period from 1969 to 1987. New data from the East Texas Pine Plantation Research Project showed that fusiform rust infection rates in slash pine peaked in 1987, then decreased to about 15 percent by 2002. For loblolly pine, the rates stabilized around 10 percent after 1987, then decreased to around 5 percent by 2002. The peak infection rates occurred …

Go to article

Nantucket Pine Tip Moth Control And Loblolly Pine Growth In Intensive Pine Culture: Two-Year Results, David Kulhavy, Jimmie L. Yeiser, L. Allen Smith Jan 2004

Nantucket Pine Tip Moth Control And Loblolly Pine Growth In Intensive Pine Culture: Two-Year Results, David Kulhavy, Jimmie L. Yeiser, L. Allen Smith

Faculty Publications

The Nantucket pine tip moth, Rhyacionia frustrana (Comstock) (NPTM), is an important pine regeneration insect in the Eastern and Southern United States (Berisford 1987). Larval feeding in meristematic tissue of young pines causes significant damage, particularly in areas where forest regeneration favors its proliferation (Yates and others 1981). Southeastern industrial forestry currently emphasizes establishment of large, homogeneous pine plantations to maximize production of wood and fiber. This forest management practice also creates optimal conditions for phytophagous insects, whose sole or primary hosts are pine trees. Increased damage by NPTM following vegetation control treatments may include improved suitability of pine tissue …

Go to article

The Response Of Bareroot Loblolly Pine Seedlings To The Amount And Timing Of Nitrogen Fertilization In The Nursery, Hans Michael Williams, Karen Woodard, Tim Stewart Jan 2004

The Response Of Bareroot Loblolly Pine Seedlings To The Amount And Timing Of Nitrogen Fertilization In The Nursery, Hans Michael Williams, Karen Woodard, Tim Stewart

Faculty Publications

A nursery study was conducted to observe the effects of altering the amount of nitrogen fertilizer at each application on bareroot loblolly pine (Pinus taeda L.) seedling morphology, survival and growth. The treatments were an equal amount of fertilizer applied each time, an increasing amount each time, and a schedule characterized by low amounts, high amounts, and low amounts. Six applications of ammonium nitrate (32.5 percent N) were applied between June and August 2000, and for all treatments, a total of 169 kg N per ha was applied. In addition, for each growing season treatment, the seedlings were treated either …

Go to article

Daily Movements Of Female White-Tailed Deer Relative To Parturition And Breeding, Christopher E. Comer Jan 2004

Daily Movements Of Female White-Tailed Deer Relative To Parturition And Breeding, Christopher E. Comer

Faculty Publications

To assess how white-tailed deer (Odocoileus virginianus) herd demographics influence reproductive behaviors, we examined 24-h diel movements of female whitetailed deer relative to parturition and breeding in a low-density population with a near even sex ratio at the Savannah River Site (SRS), South Carolina. We conducted a series of intensive, 24-h radio-tracking periods of 13 females during spring and fall 2002. We compared daily range (ha), rate of travel (m/h), and distance between extreme daily locations (m), among the periods of pre-parturition and post-parturition and pre-, peak-, and post-rut. From pre-parturition to post-parturition, we observed decreases in diel range size …

Go to article

Modeling Energy Savings From Urban Shade Trees: An Assessment Of The Citygreen Energy Conservation Module, Daniel Unger, Courtney Parks, Andrew Carver Jan 2004

Modeling Energy Savings From Urban Shade Trees: An Assessment Of The Citygreen Energy Conservation Module, Daniel Unger, Courtney Parks, Andrew Carver

Faculty Publications

CITYgreen software has become a commonly used tool to quantify the benefits of urban shade trees. Despite its frequent use, little research has been conducted to validate results of the CITYgreen energy conservation module. The first objective of this study is to perform a familiar application of CITYgreen software to predict the potential energy savings contribution of existing tree canopies in residential neighborhoods during peak cooling summer months. Unlike previous studies utilizing CITYgreen, this study also seeks to assess the software's performance by comparing model results (i.e., predicted energy savings) with actual savings (i.e., savings derived directly from energy consumption …

Go to article

The Red-Cockaded Woodpecker Cavity Tree: A Very Special Pine, Richard N. Conner, D. Craig Rudolph, Daniel Saenz, Robert H. Johnson Jan 2004

The Red-Cockaded Woodpecker Cavity Tree: A Very Special Pine, Richard N. Conner, D. Craig Rudolph, Daniel Saenz, Robert H. Johnson

Faculty Publications

The adaptation of red-cockaded woodpeckers (Picoides borealis) to fire-maintained southern pine ecosystems has included the development of behaviors that permit the species to use living pines for their cavity trees. Their adaptation to pine ecosystems has also involved a major adjustment in the species' breeding system to cooperative breeding, probably in response to the extended time period required to excavate a completed cavity in a living pine and the relative rarity of completed cavities for nesting. The characteristics of live pines make them variable in their suitability as cavity trees, leading to the evolution of selection behavior among woodpeckers. Red-cockaded …

Go to article

Red-Cockaded Woodpecker Nestling Provisioning And Reproduction In Two Different Pine Habitats, Richard R. Schaefer, Richard N. Conner, D. Craig Rudolph, Daniel Saenz Jan 2004

Red-Cockaded Woodpecker Nestling Provisioning And Reproduction In Two Different Pine Habitats, Richard R. Schaefer, Richard N. Conner, D. Craig Rudolph, Daniel Saenz

Faculty Publications

We obtained nestling provisioning and reproductive data from 24 Red-cockaded Woodpecker (Picoides borealis) groups occupying two different pine habitats-longleaf pine (Pinus palustris) and a mixture of loblolly (P. taeda) and shortleaf pine (P. echinata)--in eastern Texas during 1990 and 1901. Habitat data were collected within 800 m of each group's cavity-tree cluster. Feeding trips per nest and prey biomass per feeding trip were significantly greater in lohlolly-shortleaf pine habitat. There were few significant correlations between reproductive/provisioning and habitat variables in either pine habitat. Pines dying from infestation by southern pine beetles (Dendroctonus frontalis) were more common in loblolly-shortleaf than in …

Go to article

History And Evaluation Of The Mcintire-Stennis Cooperative Forestry Research Program, D. H. Thompson, Steven H. Bullard Jan 2004

History And Evaluation Of The Mcintire-Stennis Cooperative Forestry Research Program, D. H. Thompson, Steven H. Bullard

Faculty Publications

On October 10, 1962, President John Kennedy signed PL 87-788 (Appendix A) now known as the McIntire-Stennis Cooperative Forestry Research Program. After 40 years, this formula-based cooperative program continues to provide the base support for much of the forestry research conducted at 65 public forestry institutions. While still important, the proportion of McIntire-Stennis research sponsored over this time period has decreased. Other funding sources, such as competitive grants through the Cooperative State Research, Education, and Extension Service and other government agencies along with special grants appropriated by Congress, now finance a higher proportion of forestry research as shown in Figure …

Go to article

How Are Investment Returns Affected By Competition Control And Southern Oak Seedling Survival?, D. L. Grebner, A. W. Ezall, D. A. Gaddis, Steven H. Bullard Jan 2004

How Are Investment Returns Affected By Competition Control And Southern Oak Seedling Survival?, D. L. Grebner, A. W. Ezall, D. A. Gaddis, Steven H. Bullard

Faculty Publications

Increasing numbers of landowners are establishing hardwood plantations to satisfy their management objectives. Despite a dearth of research on competition control and its effects on initial hardwood plantation survival and investment returns, this study examines alternative competition control regimes for southern oak establishment. The analysis includes estimates of land expectation value for comparing alternatives. Our results suggest that greater returns can be achieved for southern oaks during both good and bad rainfall years, using methods that maximize survival through competition control.

Go to article

The Double-D Cell For Assembling Hardware In Upholstered Furniture Production, S. L. Hunter, Steven H. Bullard, P. H. Steele, W. D. Motsenbocker Jan 2004

The Double-D Cell For Assembling Hardware In Upholstered Furniture Production, S. L. Hunter, Steven H. Bullard, P. H. Steele, W. D. Motsenbocker

Faculty Publications

This is the first case study in a series of studies that relate specifically to the development and application of lean manufacturing techniques of furniture and wood component supplying industries. Case study one is an example of how a subassembly process in an upholstered furniture facility was re-configured from a traditional flow line to a “Double-D” manufacturing cell. This case study provides general information about lean manufacturing and how a lean manufacturing system can be implemented, followed by a detailed description of Franklin Corporation’s adoption of a new type of manufacturing cell—the “Double-D”. A discussion of the original state of …

Go to article

Parallel Pull Flow: A New Lean Production Design, S. L. Hunter, Steven H. Bullard, P. H. Steele, W. D. Motsenbocker Jan 2004

Parallel Pull Flow: A New Lean Production Design, S. L. Hunter, Steven H. Bullard, P. H. Steele, W. D. Motsenbocker

Faculty Publications

This case study is #2 in a series of studies that relate specifically to the development and application of lean manufacturing techniques for the furniture and wood component supplying industries. Case study #2 is an example of how productivity can be increased in a furniture manufacturing organization by using a new lean production design termed Parallel Pull Flow (PPF). This case study provides information about lean manufacturing and how a lean manufacturing system can be implemented, followed by a detailed case study of a furniture manufacturing company’s adoption of a new final assembly PPF lean production system.

Go to article

Comparison Between Regenerators And Non-Regenerators In Mississippi: A Discriminant Analysis, Kathryn G. Arano, Ian A. Munn, John E. Gunter, Steven H. Bullard, Max L. Doolittle Jan 2004

Comparison Between Regenerators And Non-Regenerators In Mississippi: A Discriminant Analysis, Kathryn G. Arano, Ian A. Munn, John E. Gunter, Steven H. Bullard, Max L. Doolittle

Faculty Publications

Nonindustrial private forestland (NIPF) landowners in Mississippi who recently harvested timber were surveyed to examine their regeneration behavior. Differences between regenerators and nonregenerators were investigated by looking at the different factors affecting reforestation decisions. A discriminant analysis was used to identify factors that were useful in differentiating between regenerators and nonregenerators. Ownership size; sociodemographic characteristics such as income, education, place of residence, and age; awareness of existing government incentive/assistance programs; and participation in educational programs were significant variables in differentiating between regenerators and nonregenerators. Landowners who own larger timberlands had a higher propensity to engage in regeneration activities after harvests. …

Go to article

Land For Maine's Future Program: Increasing The Return On A Sound Public Investment, Richard Barringer, Hugh Coxe, Jack Kartez, Catherine Reilly, Jonathan Rubin Jan 2004

Land For Maine's Future Program: Increasing The Return On A Sound Public Investment, Richard Barringer, Hugh Coxe, Jack Kartez, Catherine Reilly, Jonathan Rubin

Economics and Finance

Maine is nowhere a more special place than in the quality of its landscape and the traditions of its land use. Among the mo st privately-owned of all the states, Maine’s natural diversity and beauty combine with its traditions of resource stewardship, open access, and appreciation of nature to distinguish it in the public mind and national imagination. In recent decades, however, these traditions have come under assault from the forces of economic and social change; and the people of Maine have responded. In 1986, Governor Joseph Brennan’s Special Commission on Outdoor Recreation recognized the growing threats to Maine’s natur …

Go to article

Fire In Southern Appalachians: Fuels, Stand Structure And Oaks, David L. Loftis, Mary A. Arthur, Rex Mann, Jeffrey Lewis Jan 2004

Fire In Southern Appalachians: Fuels, Stand Structure And Oaks, David L. Loftis, Mary A. Arthur, Rex Mann, Jeffrey Lewis

Joint Fire Science Program Research Project Reports

Managers responsible for maintaining the diversity and productivity of Southern Appalachian forests are increasingly turning to prescribed fire as an important management tool in oak dominated forests. The decision to use fire with increasing frequency and spatial extent is based, in part, on an emerging sense of the prehistoric significance of fire in this landscape and its potential to control the proliferation of fire-sensitive competitors in contemporary forests. While it is well documented that fire has been an important ecological force in Southern Appalachian forests for a very long time, there has been little research to demonstrate that prescribed fire …

Go to article

Effects Of Silvicultural Practices On Soil Carbon And Nitrogen In A Nitrogen Saturated Central Appalachian (Usa) Hardwood Forest Ecosystem, Frank S. Gilliam, David A. Dick, Michelle L. Kerr, Mary Beth Adams Jan 2004

Effects Of Silvicultural Practices On Soil Carbon And Nitrogen In A Nitrogen Saturated Central Appalachian (Usa) Hardwood Forest Ecosystem, Frank S. Gilliam, David A. Dick, Michelle L. Kerr, Mary Beth Adams

Biological Sciences Faculty Research

Silvicultural treatments represent disturbances to forest ecosystems often resulting in transient increases in net nitrification and leaching of nitrate and base cations from the soil. Response of soil carbon (C) is more complex, decreasing from enhanced soil respiration and increasing from enhanced postharvest inputs of detritus. Because nitrogen (N) saturation can have similar effects on cation mobility, timber harvesting in N-saturated forests may contribute to a decline in both soil C and base cation fertility, decreasing tree growth. Although studies have addressed effects of either forest harvesting or N saturation separately, few data exist on their combined effects. Our study …

Go to article

Population Genetic Structure In Nolina Brittoniana (Agavaceae), A Plant Endemic To The Central Ridges Of Florida, Rebecca W. Dolan, Rebecca Yahr, Eric S. Menges Jan 2004

Population Genetic Structure In Nolina Brittoniana (Agavaceae), A Plant Endemic To The Central Ridges Of Florida, Rebecca W. Dolan, Rebecca Yahr, Eric S. Menges

Scholarship and Professional Work - LAS

Nolina brittoniana is endemic to the central ridges of peninsular Florida. Its scrub and sandhill habitats have suffered extensive anthropogenic modification. Analysis of isozymes from populations throughout its range revealed less genetic variation than generally reported for endemic plants. Populations were well differentiated, with significant clines in allele frequency along the north-south axis of distribution. Pair-wise F-statistics calculated at four levels of population geographic substructure revealed that current and inferred historical habitat patches had similar genetic structure. We found no evidence of recent bottlenecks or changes in genetic structure due to habitat loss and fragmentation, consistent with populations having always …

Go to article

Long-Term Environmental Effects Of Conifer Removal To Achieve Aspen Release In Near-Stream Areas Within The Northern Sierras, Kenneth W. Tate, Bobette Jones, Melanie Mcfarland, Tom Rickman, Al Vasquez Jan 2004

Long-Term Environmental Effects Of Conifer Removal To Achieve Aspen Release In Near-Stream Areas Within The Northern Sierras, Kenneth W. Tate, Bobette Jones, Melanie Mcfarland, Tom Rickman, Al Vasquez

Aspen Bibliography

The advanced state of conifer encroachment in aspen stands in the Sierra Nevada and southern Cascades is retarding aspen regeneration, putting an estimated 70 plus percent of stands at immediate risk of extinction with a significant percentage of stands already lost.

Go to article

Executive Summary The Role Of Ungulate Herbivory And Management On Ecosystem Patterns And Processes: A Problem Analysis, John G. Kie, Martin Vavra Jan 2004

Executive Summary The Role Of Ungulate Herbivory And Management On Ecosystem Patterns And Processes: A Problem Analysis, John G. Kie, Martin Vavra

Aspen Bibliography

No abstract provided.

Go to article

Effects Of Seeding Rates On Yield And Yield Components Of Hungarian Vetch (Vicia Pannonica Crantz.), Ayşen Uzun, Uğur Bi̇lgi̇li̇, Mehmet Si̇nci̇k, Esvet Açikgöz Jan 2004

Effects Of Seeding Rates On Yield And Yield Components Of Hungarian Vetch (Vicia Pannonica Crantz.), Ayşen Uzun, Uğur Bi̇lgi̇li̇, Mehmet Si̇nci̇k, Esvet Açikgöz

Turkish Journal of Agriculture and Forestry

The effects of 4 seeding rates (20, 40, 80 and 160 kg ha^{-1}) on dry matter yield, seed yield and yield components were evaluated in 4 accessions (L46, L79, L457, Local) of Hungarian vetch (Vicia pannonica Crantz.) under fall seeding conditions during the 2000-2001 and 2001-2002 crop years. Dry matter yield, plant height, number of pods per plant, number of seeds per plant, 1000- seed weight, biomass yield, seed yield and harvest index were measured. Based on the 2-year results, no significant differences were found among Hungarian vetch accessions in any of the measured characteristics with the exception of 1000- …

Go to article

Inclusion Of Polyamines In The Medium Improves Shoot Elongation In Hazelnut (Corylus Avellana L.) Micropropagation, Mehmet Nuri̇ Nas Jan 2004

Inclusion Of Polyamines In The Medium Improves Shoot Elongation In Hazelnut (Corylus Avellana L.) Micropropagation, Mehmet Nuri̇ Nas

Turkish Journal of Agriculture and Forestry

Buds from newly developed shoots obtained from forced outgrowth of mature field-grown hybrid hazelnut trees (Corylus avellana L.) were cultured in vitro on Murashige and Skoog [MS (1962)] medium and a modified Driver and Kuniyuki [DKW (1984)] medium containing 6.7 µM, 11.1 µM or 15.5 µM of N-6 benzyladenine (BA) supplemented with or without a combination of polyamines (0.2 mM of putrescine + 0.2 mM of spermidine + 0.05 mM of spermine). The effects of culture medium and BA were found to be insignificant on explant response. Polyamines were found to have a strong effect on both shoot elongation and …

Go to article

The Effects Of Urban Green Spaces On House Prices In The Upper Northwest Urban Development Area Of Adana (Turkey), M. Faruk Altunkasa, Cengi̇z Uslu Jan 2004

The Effects Of Urban Green Spaces On House Prices In The Upper Northwest Urban Development Area Of Adana (Turkey), M. Faruk Altunkasa, Cengi̇z Uslu

Turkish Journal of Agriculture and Forestry

Green spaces have very important functions in the creation of a sustainable city. However, in cities, which grow in terms of their population and physical environment, the primary aim of city planning is to meet the housing deficit. For this reason, areas having natural characteristics within an urban area are destroyed and existing green spaces are turned into housing areas. The most important reason why green spaces are not prioritized in city planning is that there is no market representing the green spaces. The market value of green spaces is hard to quantify. The higher price paid by customers for …

Go to article

The Screening Of F_2 Plants For The Root-Knot Nematode Resistance Gene, Mi By Pcr In Tomato, Zübeyi̇r Devran, İ. Hali̇l Elekçi̇oğlu Jan 2004

The Screening Of F_2 Plants For The Root-Knot Nematode Resistance Gene, Mi By Pcr In Tomato, Zübeyi̇r Devran, İ. Hali̇l Elekçi̇oğlu

Turkish Journal of Agriculture and Forestry

Root-knot nematodes are major pests of field and vegetable crops in Turkey and worldwide. They cause damage to many economically important horticultural crops like potato, cotton and tomato. Tomato is one of the crops in which genetic resistance has been especially effective against root-knot nematodes. In the 1940s the root-knot nematode resistance gene (Mi) was introgressed into the cultivated tomato from the wild species Lycopersicon peruvianum. Today, many commercial tomato varieties carry the Mi gene, which has been mapped. This gene confers resistance to Meloidogyne incognita, M. javanica and M. arenaria. The short arm of chromosome 6 and many markers …

Go to article

Effect Of Some Factors On The Strength Of Furniture Corner Joints Constructed With Wood Biscuits*, Ali̇ Naci̇ Tankut, Nurgül Tankut Jan 2004

Effect Of Some Factors On The Strength Of Furniture Corner Joints Constructed With Wood Biscuits*, Ali̇ Naci̇ Tankut, Nurgül Tankut

Turkish Journal of Agriculture and Forestry

This study was carried out to evaluate the bending moment resistance and stiffness of case-type furniture corner joints constructed with wood biscuits, and to determine the effects on these joints of some factors including the spacing between wood biscuit hole centers, the distance from the center of the biscuit hole to the corresponding outside edge of the board material, the method of loading, the type of composite board, and the gluing technique. The results indicated that corner joint strength comes mainly from the edge gluing of the face and butt member and not from the glued biscuits. Particleboard (PB) glued …

Go to article

First Prev Next Last